Question

A car travels a distance of 15 km in 20 minute.
Find the speed of the car in (i) km h-7, (ii) m s-1.

Answer 1

Answer:

D=15km

t=20min

change minute in hour.

1 hour equal to 60 minutes

20 minute equal to .........20/60=0.3hr.....

speed equal to distance upon time

15/0.3

=. 50 kmhr

to find the distance in metre per second first change the distance and time in metre and seconds respectively.

15 km is equals to.15/1000m

and 0.3 hr equal to. 1080sec

no find the distance s*t

. =16.2m/sec